Jim is right. Given the ammout of information you posted it could be one of several models. In a perfect world you would have posted a clear photograph, but sometimes for various reasons, that isn't possible. The alternative is a much more clear description.
Is this revolver one that is loaded through a gate on the right side of the frame, of is it a hand ejector where you swing the cylinder out to the left?
What, and where is the serial number? It may be stamped on the bottom of the butt, or located on the frame behind the crane. The "crane" is the hinge part that holds the cylinder when you swing it out to the left (If indeed you do.) To see the number you will have to open the cylinder and look at the frame. Once you locate the number, post what it is, but use xx for the last two numbers.
Does the cylinder rotate cockwise or counter-clockwise, while looking from the back as you cock the hammer?
This may not be enough, but it will get us started.